| John Keill - Geometry - 1723 - 364 pages
...oppofite Angle GH D ; or the inward Angles BGH, GHD on the fame Side together equal to two Right Angles. **I fay the Right Line AB is parallel to the Right Line C D. For** becaufe the Angle EGB is * equal to the An-- * tromtht gle GHD, and the Angle EGB \ equal to the An-... | |
| Euclid, John Keill - Geometry - 1733 - 393 pages
...oppofite Angle GHD ; or the inward Angles BGH, GHD on the fame Side together equal to two Right Angles. **I fay the Right Line AB is parallel to the Right Line** CD. For becaufe the Angle EGB is * equal to the An- * fnm tit gle GHD, and the Angle EGB t equal to... | |
| Robert Simson - Trigonometry - 1762 - 466 pages
...ftraight lines fhal! be parallel. Let the ftraight line EF which falls upon the two ftraight line* **AB, CD make the alternate angles AEF, EFD equal to one another** ; AB is parallel to CD. For if it be not parallel, AB and CD being produced mall meet either towards... | |
| Robert Simson - Trigonometry - 1775 - 520 pages
...thefe two ftraight lines fhall be parallel. Let the ftraight line EF, which falls upon the two ftraight **lines AB, CD, make the alternate angles AEF, EFD equal to one another;** AB is parallel to CD. For, if it be not parallel, AB and CD being produced fhall meet either towards... | |
| Euclid - 1781 - 520 pages
...two' ftraight lines fhall be parallel. Let the ftraight line EF, which falls upon the two ftraight **lines AB, CD, make the alternate angles AEF, EFD equal to one another;** AB is parallel to CD. For, if it be not parallel, AB and CD being produced fliall meet either towards... | |
| Euclid, Robert Simson - Geometry - 1781 - 466 pages
...thefe two ftraight lines fhall be parallel. Let the ftraight line EF which falls upon the two ftraight **lines AB, CD make the alternate angles AEF, EFD equal to one another** ; AB is parallel to CD. For if it be not parallel, AB and CD being produced fhall meet cither towards... | |
| James Williamson - Mathematics - 1781
...be parallel to one another. For let the ftraight line EF falling upon the two ftraight lines AB, CE> **make the alternate angles AEF, EFD equal to one another. I fay** that the Jlraight Kne AB is parallel to the ftraight line CD. For if not, AB and CD being produced... | |
| John Keill - Geometry - 1782 - 399 pages
...oppofite Angle GHD ; or the inward Angles BGH, GHD, on the fame Side together, equal to two Right Angles. **I fay, the Right Line AB is parallel to the Right Line C D.** • Fran ibt For becauie the Angles EGB is * equal to the An$*' rv §le GHD, and the Angle EG B f equal... | |
| John Playfair - Euclid's Elements - 1795 - 400 pages
...thefe two ftraight lines lhall be parallel. Let the flraight line EF, which falls upon the two ftraight **lines AB, CD make the alternate angles AEF, EFD equal to one another** ; AB is parallel to CD. For, if it be not parallel, AB and CD being produced fliall meet either towards... | |
| Alexander Ingram - Trigonometry - 1799 - 351 pages
...two ftraight lines fliall be parallel. Let the ftraight line EF, which falls upon the two ftraight **lines AB, CD, make the alternate angles AEF, EFD equal to one another** ; AB is parallel to CD. For, if it be not parallel, AB and CD being produced, mall meet either towards... | |
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